CAJ | 학술논문

在网络传输过程中,系统的稳定性受不确定,网络延迟,丢包和错序所影响.本文针对这非理想网络状况,研究了网络控制系统状态反馈控制.建立连续时间系统模型时,还引入了一个定常状态时延,使得模型更贴近实际.随后,运用改进的Lyapunov-Krasovskii函数,推导出网络控制系统鲁棒稳定的充分条件,并基于该充分条件得到利用线性矩阵小等式(LMI)的控制器设计方法,再运用迭代算法求解相关系数.最后通过MATLAB数值仿真算例,证明了本文方法的正确性和有效性.
재망락전수과정중,계통적은정성수불학정,망락연지,주포화착서소영향.본문침대저비이상망락상황,연구료망락공제계통상태반궤공제.건립련속시간계통모형시,환인입료일개정상상태시연,사득모형경첩근실제.수후,운용개진적Lyapunov-Krasovskii함수,추도출망락공제계통로봉은정적충분조건,병기우해충분조건득도이용선성구진소등식(LMI)적공제기설계방법,재운용질대산법구해상관계수.최후통과MATLAB수치방진산례,증명료본문방법적정학성화유효성.
In the process of signal transmission in network, the stability of the system is affected by uncertainties, time-delay, data packet dropout, and sequence errors. This paper is concerned with the state feedback control of networked control systems(NCS) under these nonideal network conditions. To closely model the real system, a constant time-delay is introduced in the continuous-time system model. A sufficient condition of robust stability for NCS is derived by using an improved Lyapunov-Krasovskii functional. Based on this condition a controller design method is proposed by using linear matrix inequalities(LMl). The corresponding coefficients are obtained from the LMI by using an iterative algorithm. Simulation results of an example with MATLAB show the effectiveness and advantages of the proposed method.